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MaRussiya [10]
3 years ago
7

Find the area of the composite figure, rounding to the nearest tenth.

Mathematics
1 answer:
Ugo [173]3 years ago
7 0

Answer:

85,1 ft^2

Step-by-step explanation:

Semicircle area : 4^2π / 2 = 8π = 25,1 ft^2

Triangle area : (8 x 15) / 2 = 60 ft^2

Total Area = 60 + 25,1 = 85,1 ft^2

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1. The numbers ______ and _____ are respectively the additive and multiplicative identities of rational numbers
miss Akunina [59]

Answer:  0 and 1, in that order

The numbers <u>   0   </u> and <u>   1   </u> are respectively the additive and multiplicative identities of rational numbers.

===========================================================

Explanation:

The additive identity is 0 because adding 0 to any number leads to the original number. For instance, 7+0 = 7. In general we can say x+0 = x or we could also say 0+x = x.

The multiplicative identity is 1 because multiplying 1 with anything leads to that original number. Example: 1*5 = 5 or 9*1 = 1. The general template is x*1 = x which is the same as saying 1*x = x.

These ideas not only apply to rational numbers, but to real numbers as well.

8 0
2 years ago
Juana went shopping with $ 50 and spent $ 45. What percentage of her money did she spend?
Ugo [173]

Answer: 90%

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
5x+20y=4<br> x=-4y+1<br><br> Solve for x/y
Andrews [41]

Hi there!


Looks like a lot of work is going on here.


Let's start by solving this equation for the x.


5x + 20y = 4


Step 1) Add -20y to both sides.


5x + 20y + - 20y = 4 - 20y 5x = -20y + 4


Step 2) Divide both sides by 5.


\frac{5x}{5}  = \frac{-20y + 4}{5}


x = -4y +  \frac{4}{5}


Final Answer:


x = -4y +  \frac{4}{5}


Now, let's solve for y.


Step 1) Add -5x to both sides.


5x + 20y + - 5x = 4 + - 5x 20y = -5x + 4


Step 2) Divide both sides by 20.


\frac{20y}{20} =  \frac{-5x + 4}{20}


y =  \frac{-1}{4} x +  \frac{1}{5}


Final Answer:


y =  \frac{-1}{4} x +  \frac{1}{5}


Hope this helps! :D


Hint - When you have two variables in an equation, and you want to solve for one, the other will end up in your answer. :)

6 0
3 years ago
Are expressions equivalent to 3(62)?
Brrunno [24]

Answer:

186

Step-by-step explanation:

4 0
2 years ago
Colton left his house for work and was gone 5 hours. He spent a total of } hour driving to and from work and didn't go anywhere
Solnce55 [7]

Answer:

4\frac{3}{4}  hours

Step-by-step explanation:

he was gone for 5 \frac{1}{4} hours, he spent \frac{1}{2} an hour driving.

5 \frac{1}{4} - \frac{1}{2} = 4\frac{3}{4} hours at  work.

6 0
2 years ago
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